Improvement in fastenings for fruit-jars



E. B OORSE.

Fruit Jar.

No; 96,873. Patented Nov. 16, 186 9.

Witnesses: W

gfglatwt (Mitre.

" ELIAM BOORSE, OF PHILADELPHIA, PENNSYLVANIA.

Letters Patent N 96,873, dated November 16, 1869.

IMPROVEMENT IN FASTENINGS FOR FRUIT-JARS.

The Schedule referred to in these Letters Patent and making part of thesame.

To all whom it may concern:

Be it known that I, Eraser Boonsn, of the city and county ofPhiladelphia, and State of Pennsylvania, have invented a new and usefulImprovement in Fruit- Jars; and 1 do hereby declare the following-to bea full, clear, and exactdescription of the nature there of, sufiicientto enable others skilled in the art to which my invention appcrtains tomake and use the same, reference being bad to the accompanying drawings,making part of this specification, in which Figure'l is a side view ofthe device illustrating my invention.

Figure 2 is a top or plan view thereof.

Similar letters of reference indicate corresponding parts in the twofigures.

My invention consists in constructing the lockingcap of a fi'uit-ja-r ofa series of arms of unequal lengths and forming hooks on their lowerends, which are adapted to take hold of the thread in the neck of thejar, so that by rotating said cap, the arms engage with the thread anddraw the cap with them, so that the latter is firmly and securely heldin place with the top or cover interposed between the cap and neck,asusual.

A represcntsthe body of a fruit-jar of ordinary constructiou, and havingits neck formed with a screwthread, B. y

0 represents the lockingcap, which is constructed, by preference, ofmetal, and consists of a top, 0, which is of the form of a flat disk orring, with which are formed a series of ar1ns,'D D D D.

In the present case, these arms are four in number, and may be cast withor cut out of the samepiece with the top 0', and are ofunequal lengths,their lower ends are bent inwardly or toward each other, and form hooksor catches E.

These arms may be formed separately from the top and subsequentlysoldered, riveted, or otherwise secured to saidtop, as most desirable orconvenient.

The operation is as follows:

of the cap may consist of an open ring.

The cap 0 is placed on the neck of the jar with the longest arm D at thebeginning of the thread. A rotation of the cap will cause the arm D toengage with the thread and advance therein. The arm D, and subsequentlythe other arms, follow the direction and oporation of the armv 1) untilthe cap cannot be further rotated, which is owing to its arrival orstoppage on the neck of the jar.

It will be found that the cap is firmly held in place on the jar.

Should the thread break at any portion and one or moie of the aims bethereby released, the other arms will be found suflicient to hold thecap.

An ordinary top or cover may be interposed between i the cap and theneck of the jar, and a rubber band or gasket applied, as ordinarily. Inthis case, the top 0 It the ordinary top or cover is dispensed with, thetop of the cap must be. made entire, or. in theform of a disk, and thegasket, if employed, must be located between the cap and the neck of thejar.

The arms 1) D I) may be lengthened, so as to engage with the thread ofthe neck from their commencement to termination, or the thread may beginat or about the middle of the neck, instead of at its upper end, asshown in the drawings, but these are matters which are subjectto desireor necessity.

Having thus described my invention, 7 \Vhat I claim as new, and desireto secure by Letters Patent, is-

As a new article of manufiicture, the locking-cap for screw-necked jars,constructed with engaging arms 1) 1) I) 1) of unequal lengths, wherebythe hooked ends of said arms engage under the same thread and hold atdifferent points thereon, substantially as represented a-nd described,and for the purpose specified,

' ELIAM BOORSE.

lYit-nesscs JOHN A. WIEDnnsrrnrM, W. H. SMITH.

